FIELD: defeating Earth's gravity injection of space rockets into preset flight parameters as 2-nd and 3-rd stage rocket engines and transport engines for transportation facilities on other planets without atmosphere and living organisms. SUBSTANCE: engine is additionally provided with start and stopping system including starting generator and additional gamma ray radiator, protection and automatic control system, main neutron generator, neutron reflector, intended for increased of radiation directivity, neutron multiplier, neutron moderator and positron radiator. EFFECT: enhanced efficiency; low fuel load; possibility of engine shut-down and restart. 2 cl, 1 dwg
